going



3 Sheets-.Sheet 1 April 10, 1928.

G. G. GOING TYPEWRITING MACHINE Filed Sept. 50. 1925 WITNESEEE April 10,1928. 1,665,736

G. G. GOING TYPEwRTING MACHINE Filed Sept. 30,. 1925 5 Sheets-.Sheet 2INVENToR. wlTN EGEEG 7 ATTORNEY s sheds-snm 3 Ap l0, 1928.

- G` G. GOING TYPwRITING mamma Filed sept. 50, 1925 INVENTOR.

ATTORNEY WlTNEEEES Patented pr. 10, 1928.

GEORGE G.' come, oF MInnLnToWnoonnncrionnnssienon, BYivLEsNn AssIGN# iMENTS, To REMINGTON-TY1EWRITER coMnANYrn coRBoRATIoN or NEWYORK..`

im,frnvvnrrneS MACHINE ,l y,

Appnjcation flied september so, isasgsiiarno. 59,623.

My invention relates to ribbon mechanisms ject is to provide a completeribbonmecha-f nism for such macliinesVsaid niiechanismbeing capable ofperforming all of the usual functions characteristic oi" such mechanism.Stated more specifically the objects of my invention are toprovide newand improved feeding mechanism, vibrating mechanism, field-changingmechanism, and reversing mechanism `tor the ribbon. 4 y

To thejabove and other ends which Will hereinafter appear, my inventionconsists in the features ofconstruction,combinations ot 'devices andarrangements of parts hereinafter described and particularly pointed outin the claims. 'h 1 A As illustrated in the accompanying drawings, thepreferred torni of my `invention is shown as` applied to a No. G`Remington` Noiseless typeivriting machine, although'it is to beunderstood that the various features ot the inventionare readilyapplicable in l Whole or in part to other styles of Writing;

machines.

y In the drawings,

1 isa fragmentary front-tosrear vertical sectional view taken aboutcentrally of the machine, only so much thereof being shown as isnecessary to a ullunderstanch ing' otthevinvention. y y vFin; `2 isV afragmentary horizontal sectional vievv taken on a plane indicated by thesection line 1 1 in Fi l and looking; dotvnp Ward in the direction ofthe arrows atsaid line.

`v Fig. il a 'fragmentary vertical sectional View taken on a planeindicated by the section 'line 2-2 in Fig. l and looltingrear- Ward inthe direction 'ot the arrows atsaid line.

Fig. Ll; isla construction. p

appears 'from the drawings, the main traineoil Jdie machinecomprises'sidc plates 1 'which are connected at the trontbyia'crosspiece, not herein shown, but which is term-ed integrally with thesideplates. Said plates l are also connected by a rear plate andsuri'nounted by a top plate ll only tralginentarily illustrated. Theupper parts ot vthe side plates l are connected at the front by a crossplatcQ which is secured `by screws 8 to luggs 4 infojecting inward fromthe side plates. The platen 5, diagrannnatically `illustrated `in lirontelevation-oil a detail of Figlhis .mounted on a carriage not shown)which is adapted totravel iback aindffortli on a grjooved trackQWay ortrough,'pvairtlot'l Which'f ',sliownand numbered (5;` 'Coopera-` tivewith the front `face of the platen `are a set of type bars,not hereinshown, `each type' bar being operative by atrain oticonnecti'onscomprisingasublever 7 having a. stationary pivot 8 and connected byYatlinl; QWithl'a key leverl()y provided at'i'tst'ront end with a hey#vcap or ley 1p1 and pivotally supported at'l2 towards the rear ofthemachineffEach'sub-i y leverf has enrolling connection with a'drivinglever lvivhich has a stationary'pivot 14.

Suspended from the driving lever at l'is a link 16 the lower end portionWherefis bifurcated ory forked to embrace erstraddle a horizontallydisposed arcuate universal bar `vvhich is part of Va trame lfhavingextensions such as 19'." The extensions arc `pivotally connectedatQOWitharms21 fixed to and extending rearvvarcil` from asquarc rock` shaft 22that is pivoted on pivot pins 23 adjustably secured in ears 24.#projecting from the side portions 25a of a yoke or cross bar'Q thatextends from side to `side of the machine and 4is secured to the'side'plates VLl; The .rock shaft 22 has operative connections totheescapement mechanism of the machine not herein shown.` The partshereinbefore referred to arecommon to the No5 6 Remington-Noiselesstypewriting machine and need not `be Ydescribed at `greater' length.

The ribbon 26 `herein shown is divided intolongitudinal stripes, zonesor kfields,

designated as a and Z2, and having dil'erent` colors oncharacteristics"The ribbon is Wound on rotary carriers or spoolsarranged at opposite sides of the niachineaboif'e the top plate.y 'Eachcarrier, designated asa Whole by the number 27, comprises a hub or coreportion 28 and 'flanges 29 Vand 30, the top flanges or headsbeingdetachable, the spools being arranged in housings or easings .31'detachably secured to the top plate '1a. The, spools are mounted at-theupper-'lend portions` of vertically arranged shafts 32 which bear neartheir `upper ends in bushings 33' in the top .tplat`e,thel lowerendfpo'rtions of said shafts bearing Vin lugs lb lprojecting' inwardJfrom the side plates rl'. The shafts 32 are hollow :and each carries inits lower end a yblock or` plug/,'34, and arranged outsideot the shaftbelow the flug 1b is a beveled 'ivheel 'havin'g a hub'portion 36 whichreceives a set screw 37', whereby, the beveledwheel is secured to theshaft. Adapted to mesh alternatively with the beveled wheels are beveledpinions38 secured; by

setscrews '39 to a. horizontallyA arranged' driving shaft 40 thatextends from side to side of the machine and bears rotatably andslidably in the side plates 1, the right-hand end portion of said shaftprojecting outside the" side rameandhaving secured to it ahandle 41 formanually turning and* shifting the drivingA shaft'.

For automatically turning the shaft 40, connections are provided to therock shaft 22,.said connections comprisinga crank arm 42 having a:jaw-like or U-shaped lower end; portion which embraces the rock shaft 22and" is clamped.v or secured theretoby a clamping-screw 43 that connectsthe tree end portions of the U-shaped' end.4 The crank arm 42 projectsupwardfrom the rock shaft and. inclines slightly rearward, its upper endportion being connectedpivotallyat 44 with a rearwardly and downwardlyextendingv pawl-carrying member 45 that is off-set upwardly to providean arm. 46 which terminates in a U-shaped laterally extending portion47, the cross portion of which is beveled at 48. There isthus provided1a U- shapedfpawl. 47-48 at the end of the Larm 4.6.y Pivotallyconnected` to the member 45 at 49 is a rearwardly extending arm. 50parallel. to the arm 46 and which alsoterminates in a `[Ll-shaped4laterally extendingA portion 51,k the cross portion of which is beveledl0r shaped as indicated at 52 to provide ay pawl tooth.. It will beobserved thatthe edges or teeth 48 andy 52 are oppositely disposed, theformer being at therear side, and the latter at the front side of theirrespective cross portions or pawls. The parallel arms 46 and 50 areconnected by a draw spring 53 which tends constantly tol draw the pawlarms towards eachother and to maintain thel pawl teeth 48 and 52 inoperative engagement with a ratchet wheel 54 having a hub portion whichreceives a set screw 56 whereby the ratchet wheel is securedl to theribbon driving shaft 40 just to the right of the left-hand drivingpinion 88. The U-shaped pawls loosely embrace the ratchet wheel 54. Theconstruction issucli that at each operation oi a printing key lever 10the link 9 actuating the sub-lever 7 and the driving lever 13 will causethe latter, through the forked link 16, to depress the universal bar 17,causing the arms 19 that are part of the universal ybar frame to act onthe crank arm 21 and rock shaft 22.- The motion of the rock shaft willbe transmitted through the crank arm 42 to the connected pawl carrierormen'iber 45 which will be moved rearward causing the pawl arms 46y and50 to move rearward and. downward.. During this movement the pawl tooth4S, co-acting with the teeth of? the ratchet wheel?. 54 at; the upperside thereof," will Aturn the wheel' in the direction of the arrow inFig. 1. At the same time the pawl.` tooth 52l will slide or click idlyover theratchet tcethat the under; side of the wheel 54, the pawl teethbeing held by the spring 53 in contactive engagement with the ratchetwheel. When the actuated printing key leveris released the parts will berestored to normal position by the several restoring springs, the pawlarms 46 and 50 being retracted as the shaiit 22is rocked Vtornard.During the retracting movement the pawl tooth 52 will co-act with theratchet wheel to turn it inthe direction of the arrow in Fig. 1, whilethe pawl tooth 48 will click idly over the' wheel. In other words, bymeans ot the double-pawl constructionv the ratchet wheel 54 is turnedboth during the actuation of the printing keysl 11 and also during theirreturn movements. The turning movement of the ratchet wheel' 54 is of,course communicated to the ribbon driving shaft 40, and the drivingpinions 38. yAs will be apparent from F ig. 3, these pinions are solocated on the driving sha-ft relatively to the beveled wheels 35' thatonly one pinion 38 and' its associate wheel 35' can be in mesh at thesame time, the other pinion and wheel being then disengaged. As a.consequence the turning movement of the engaged or intermeshing pinion38 and wheel/35 will be transmitted to the connected spool shaft 32,causing it to turn its spool 27 and wind the ribbon thereon, the ribbonat the same time being drawn oiii` or unwound from the companion. ribbonspool at the opposite side of the machine.

The ribbon 26 is led :trom the spools 27 through slots in the casings31, and; midway between the spools the ribbon is threaded or passedthrough a vibratory holder or vibrator 57. The ribbon vibrator orcarrier 57 is made `preferably of sheet metal and comprises a U-shapedbody portion 58 having its sides bent forward and with slots indicatedat 59, the slots being formed with outlets or mouths 60 through whichthe ribbon may be introduced or threaded and withdrawn. Rightward fromthe body portion 58 extends an integral arm 61 terminating in an uprightextension 62 which is pivoted at 63 on a. bracket or arm 64, the lower'end.` ot which is secured by screws 65 to the front vertical face of thetrackway part 6', the arm 64 being oit-set rearward so that its lowerend is in the plane of the tracliway. The vibrator is thus pivoted infront of the platen `at one side of, the printing point and slightlylli) tionot. a horizontal rock shaft 72.

inateri al.

the link beingpivotally connected at 70 to y the :upper end. o'l a.crank arn'i 7l that is iixed at its lower end tothe rear end por-Adrawspring' 73 connects the crank arin 7l with the .vibrator` 57. atthev elbowtorincd by the junction-ot the arms orportions 6l and 52. rlheroei; shalt 7 Qwhich extends .towards the .iront oit the machine takesbearings in lugs Tl projecting inward tron'rthe right-hand side platel.`At its forward end said rock sha'lt `earriesa horizmital leltwardlyextending crank arm 7 5 which is formed between its endsiwith adepression 7 6. Adapted 'z riablyy to engage with the crank arm is alink or connector' 77 the upper end ot `Which is slotted aszindicated at77"L to engage slidably with the crank arni 7 The lower end ot'the linkis pivoted at- 78'to an ear or extension 79 which is part of an. angularsupporting member 8O having at its letthand end a forward extension 8lthat tei-,

ininates ,in a jaw or U-shaped portionS)J thatlits overa square rockshaft 83. and is screwed thereto, said rock shalt bearingy on pivotscrews 841:` adjustably secured to earslit in* tegral with the cross bar25. A second an- `gular arm connn'ising,` a U-shaped poi-tiener Jaw S2enibraeing the shait 83 andscrewed theretois arranged at thelett-handend portion ot said shalt 83, said angular arin hunA ther`comprisinga rearward portion 8l and an angular extension Sl, .The twoangular arinsl provide support for a straight universal bar that isarranged under the set oi' key levers 10 in a position to be actuated byvthem when they are depressed. Said iuiiversal bar is li-shaped in crosssection` beingctornled preferably ot sheet inetaL and its upper Harigeis :termed with slits lo at short intervals, these seuoarauting` ordividing.; the flange into a'series oiI tongues $57 or individual`Contacts. The tongues `'are settieiently tlexible to yield whenei'lgragi'ed by the key levers 10. Arranged inside thenniversal bar is astrengthening strip `88 ot suitable The universal bar is secured byscrews 89 to the supporting arms til,4 the screws 89 likewise starving'`to hold the strengthening `strip in place. When a `key lever isdepressed it will act on the universal bar Causingit to swing about theaxis ot the shaft 85%, this motion benigtransnntted through the link 7 7to the crank arin 7 rocking` the shaft 72 and swinging lettward portion93 res portion ot the ribbon in the pat-h. oit the oncoming typey bar,as islwell understood. liVhe'n the actuated keyis .released the partswill be restored to norn'ial `position7k the` vilnating;` train being,`restored by the spring' 73 and by an additional rrstoring"spring 90which is eoi'n'ieeted at itsloiver end to aproection 91 on the link 77and at its upperend to a switch hereinafter described. The universal bar8:3487 in association Wit-h the strip 8S is Yfound to lniniinimethe-noise due to the` strikingv ot' the key levers againstV it so thatsetuid snhstf'intially` eliminated. Prefer? ably stops are provided torlimitingdown@` ward inovenient ot the universal harto-87, y nach Stopsbeing in the torni ot pads 87" otl liber lor the like, mounted onadjustableholders 87 that are supported on 25 trom the cross bar 25.

Means `are provided ttor at will changing the throwv or extent ofvibratory inovenient ot the ribbon holder or: vibrator 57 1n order thateitherfof the tields or zones and Z),

f and settingl the link 77 in varyingpredeterprojcetions4 ininedrelationships with the crank arin 75.

Said. switch, designated as awhole yby the reference nuineral 92, ispreferably n'rade o a singlepiece'ot sheet nietal ent and shaped toprovide a U-shaped body port-ion 93 and a rearwardly extending arin941-. Said `arm 94. is enlarged at its rear end and formed With anopen-mouthed slot 95 which loosely embraces `'the upper end portion ofthe linkv vThe upper end 77 belov,T the crank arin 7 5. ot the spring 901s anchored to the enlarged end portion oli the arm 94C. The parallelhorizontal sides is in the tornil ot'a :vertical .Screw 96 having.;l anelongated shank, the lower end ofthe screw being y l disposed lngprojecting inward troni the right-hand sideplate l. The Usshaped body tson and isI supported by 'the lug;- 97 and ia adapted tov turn on thescrew 96 as a pivot. the top and bottom sides o'l. the body peetion 03being" eonlined between the head of the screw Q6 and the upper tace ofthe lng or projection 97. r)The pivot screw 96 is held rigidlyon the lng97 by a Clamping nut 98 end ofthe `screiv 9G projecting below `the underitaee ot `the lue; 97. Spring pressure is applied to the switch 92 by aU-shaped springltl which 1s hooked around 'a pinltl()` on the switch,the opposite end ot'l said spring; being' hooked over or anchored to apin lOl on the hip; 97. For Controlling the switeh 92 there is provideda key or` finger piece inthe .torni of the knnrledhead102 et ashankltll` Secured `to the angularly oli-- set portion .1.042 ot an arin1054 which.. is,

ofthe body portion are pertorated to recon/ea pivot member which' tvhiehthreaded on the lower;

threaded into a horizontally llt) pivoted on a screw 106 at the rear ofthe body portion 93, so as to enable the handle or finger piece 102 tobe moved up and down about the screw pivot 106 independently of theswitch while at the same time participating in lateral swingingmovements of the switch about the pivotal center 96. rlhe shank 103projects forward through an opening 107 in the front plate2, the lowerside of said opening being formed about at its middle with a depressionor notch 108. Adjacent the opening 107 the front plate may be providedwith the usual color indicia with which the shank and head 102 cooperateas a pointer. lli/*hen the shank 108 is in register with the notch 108it may be pushed downward so as to seat in said notch, thereby lockingthe switch against lateral movement. The parts are so constructed andproportioned that at such time the link 77 is in register with thedepression 76 in the arm 75, theconsequence being that when. the link ispulled down at actuations of the keys 11 the link will play idly in thedepression 76 and will not affect the crank arm 75. ln other words, theribbon vibrating mechanism will be rendered ineffective, as is desiredwhen mimeographing is being done. Gn raising the shank 108 outof thenotch 108 the switch 92 may be swung on the center 96 either to the leftor right, that is, further from or closer tothe pivotal axis 72 of thearm 7 5. lrWhen the switch is in the Fig. 2 position the link 77, actingon the arm 75, willlift the vibrator to its lesser extent, raising theupper field a to the types at printing operation. By switching themember 92 towards the right the. link 77 may be slid rightwa-rd alongarm and reset close to the pivotal axis thereof, so thatv at printingoperations a greater throw will be given to the vibrator, sufficient topresent the lower lield Z) to the types. ln order to limit the sidewiseor switching movements of the switch 92, a stop plate 109 is provided,said plate being horizontally disposed and having at itsrear end uprightprojections or stops 110 and 111 for cooperation with the sides of thearm 94. The .stop plate 109 is secured to the. underside of the lug 97by a headed screw. 112. The stop 110 limits the movement of the switch92 towards the left, while the stop 111 limits such movements towardstheright. It will be under stood that the notch or slot in the switch 92 byloosely embracing the sides of the link 77 will maintain the link atvarying predetermined points lengthwise of the crank or operating arm 75without7 however, interfering with actuating movements of said linkwhich will slide or move up and down through the notch 95 duringprinting operations.

Means are provided for reversing automatically the direction of theribbon feed,`

memes:

so that when the ribbon is fully wound on one spool, leaving the otherspool bare, it may be fed back again until completely rewound on thebare spool. The ribbon reversing meansare preferably controlled by theinner plies of the ribbon on the spools and comprises bell cranks 113,one for each ribbon spool. at. 1.11 on ears 115 bent inward from thespool cores 28. The depending arm of each bell crank 113 terminates in anose 116 which projects outward through a vertical slot-way 117 in thespool core. 'lhe horizontally disposed arm of cach bell crank 113projects inward througha kerf 'or slot-way 118 in the associate shaft32, and terminates in a hook-like portion 119 from which is suspended arod 120 that extends downward through the bore of the shaft 32 andnormally terminates just within the lower end of the said shaft, asshown by full lines in Fig. Preferably the end'portion of each rod 120is formed with a circular groove 121 to insure proper cooperation withan abutment, later'described. lt will be understood that each rod 120lis held within the shaft 32 by the associate bell crank 113, and thatthe bell crank is maintained in a position effective to accomplish thisresult by the inner plies of the ribbon 26 which are wound on the spoolcore and cover the slot 117, preventing the nose 116 from being pushedout through the slot by the weight of the rod 120. lt will be furtherunderstood that when the ribbon has been completely unwound from one ofthe spools, uncovering the slot 117, thenose 116 will be freed,permitting the rod 120 to drop down through the force of gravity untilits notched lower end is exposed below the lower end of the shaft 32.'lhisresults in setting in operation a` train of reversing mechanismwhich theretofore has moved idly at each actuation of the printing keys.There are two of such trains of mechanism, one associated with eachribbon spool and comprising an angular member or bell crank 122 having arearwardly extending arm 123 which is adapted to vibrate in a horizontalplane just under the lower end of the associate shaft 32, said angularmember further comprising an inwardly extending arm 124. Each member orbell crank 122 is pivoted at 125 to the under side of a bifurcatedsupporting member 126 which in turn is pivoted at 127 to the under sideof a lug or projection 128 extending inward from the adjacent sideplate 1. The bell crank 122 is pivoted to the shorter arm or bifurcation129 of the member 126, the longer arm 130 of said member extendingrearward and inward and terminating in a` rounded portion 131 which fitsin a circumferential groove 132 formed in the body portion of theassociate driving pinion 38, thus connecting the member 126 Said bellcranks are pivoted.

ber 1.

VLeesmee with `the ribbon driving shaft'40 so that `pivotal movementsofthe member will be transmitted to` the shaft, moving' it endwise. At thesaine time the connection is such that=r0- tary movements of ,the shaftwill not be interfered with, the groovedportions 132 of the drivingpinions turning freely over the rounded portions 1310i therinembers 126.Each arm 13() is preferably provided 'with a downwardly bent andrearwardly extending finger 133 which underlies the shaft 40 andprevents displacement of the member 126 inan upward direction, suchaswould disconnect the rounded end 131 from the groove 132. The angularmembers or bell cranks 122 are connected by trains of devices witlitlierockshaft '22 so as to receive impulses whenever the printing key leversare depressed. Eachtrain of devices comprises a link 134 pivoted to thearm 124 at 135, said link extending forward and terminating vin anupwardly bent 'ear 134L whichis nivotally connected at 135 with thedepen ing arm of a bell ciank 137 pivoted on a pivot screw 138 which issecured in `a boss `139 on the adjacent side plate on frame niem- Theother arni of the bell crank137 carries a' pin 14() which. engagesloosely'in a slot 141 `formed at the rear' end of' an arm 142 whichextends downward andfoi'- ward, terminating in `a U-shaped or jawlik'eportion 143which fits over or embraces the `rock shaft 22 and is clampedthereto by 4a clamping screw 144. When, asl eX- planied, the shaft 22 isrocke'd'rearward on `depressions ofuthe printing key levers 10,

the `arnis142 will be swung` dowi'iward,l turning the connected bellcranks '137 and causiii'gthenito pull forward the links 134, `these inturn actuating the* angular members 122 and swinging their `arms 123inwardpast the lowerends of the shafts 32 and the rods 120 housedtherein. ,VVhenj the keys are released i the parts are returned tonormal position,

' the arm's123swinging back under the shafts It will be understood thatduring these vibratory movements of the members 122 on their pivotalcenters 125 the members 130 will not be affected, so that `pivotal cen-`yters125 will remain stationary, as will of course Vtheroundediengaging,portions 131. lhen, however,` the ribbon is completelyunwound from one of the spools, allowing thee-sso'ciate rod 120 to dropdownntotho dotted line position shown at'tlie left' in- Fig. V3, thegroei/ed portions`12'lf ofthe rod `will obstruct'tlie'lpatli of the arm123 acting as an abutinentor obstruction to `preventfor block furtherpivotal-iii`ovementof the bell crank `around the center 125' after theariii1`23-lias' coii'tac'tedwiththe rod. As a consequence further`forward pull on vthe link 134 will be transmitte'dthrough the bell`crank 122 to the member 12G^which`hereto fore has .remained quiescent,causing said member `togswing' leftward on itspivot 127. Thisoperat-ionwill be clear from a consideration of Fig. 2 which showsthe arm 123 ofthe left-hand bell crank 122 positioned as blockedk by the ydrop rod120. At this time n the pull` of the left-hand `link 134 will be totheleft side of the pivotalcenter 127, and

`since the bell crank 122 is prevented from `turning freely on its axis125 the main ef- .feet of the Vlink will be on the member `126r whichwill be forced to yield, andas it turns `willinove the driivingshaft40`leftward `in a longitudinal direction, causing the rightliand pinion38to separate from its gear wheel a'nd bringing the left-hand pinion 38into contiguity to itsgear wheel `35. The

final stage of the left-hand shifting moveinent-` of the shaftl isassisted by certain spring actuated toggle devices as hereinafterdescribed. 4The parts are soproportioned and expeditiously accomplished.lVhen the feed lof the ribbon is `reversed `and it starts to rewind ontheempty spool, the nose116 of the bell crank 113 will be forced `inward`toward the spool axis, causing the bell'crank:k

to lift` theidrop rod 120,1out of the path of thearm 123. f

^ In order to vassist the driving shaft 40 to complete fully. its`longitudinal shifting movement, detentor toggle devices are pro-eivided, preferablyfcomprising a pin 145 carried bythe `free end` of anarm 146 and pro- `jecting` up into the right-handgroove132.

The arm 146 is part of a bellqcrankthat.furthermcoiiiprisesV` anyinwardly extending arm 14,7, thebell crank 146, 147 `beingpivoted at14'8't0 the underside ofa plate 149 that is secured by screws 150 to a`stationary cross bar 151. limited by a pin 152 carried by the arm-147and adapted to: play ina circularhole 153 in the plate 149, The innerend of the arm k147 is pivotally connected at154 with` a link `155which-is also pivotally connected'at 15b `with an arm 157 pivoted at 158tothe plate 149. Aidraw'spring 159connects the arm `f157 with the` plate149 pand' constantly tends `topull said arm rightward about its pivot153-' The arm 147 and the'link 155.0011- st'itute in effect atoggletwliisch whenfcarried slightly, past'the straight line'l position`in either direction is `furtherbrok'en bythe ac- Moveinents of vthebell crank are tioii of the spring 159: A"l.`hatwis`,`fthe action ofeach member 126'is sufficient to actuate the toggle" from one of: itsbroken positions (one'of which is shown. in Fig. 2),athe`n'to straightenit and carry'rit 4sliglitlyfpast `the straightlline position, whereuponther spring 159 becomes effective fn'rtherfto vcoinjgilete'the togglemovement,"land as aconsequence, the* eo'athe downward swing of the :arm

`riiglittline movement of theshaft 4() with which the toggle isconnected by the pin 145 and groove 132.

In-viewof what? has been said heretofore,

5 itis not believed to be necessary to enter into -a detailedexplanation of the mode of operation of the entir-e mechanism, but oneor two points may be adverted to. Referring` to the construction of theuniversal bar SMS?, the

l slitsl 86 are continued through the full width -offthe upper flangeand penetrate slightly ydown past tli-e upper corner of the bar and intothe front vertical portion thereof. The flexibility of the tonguesv orcontacts is therel bypromoted. Also to'this end the U-shapeduniversalbar or channel bar is made of extremely thin'sheet metal,'theadditional device or strip SES being employed to stilfen orstrengthenit. The upper tongued porftions of the bar 85-87 are inclinedslightly lto the horizontal so that the key levers when depressed willfirst contact with lthe rear free ends of the tongues which are soflexible 'that they yabsorb the shock of contact of the -key levers andaslthe -key leversare further depressed willyieldor give sufficiently toenable the bottom edges of the key levers to ride over the tops-,of thevtongues and finally come to reston the corner of the universal barfjustat the upper bend. This results in Van-easy and quietaction-of the keylevers on the universal bar through the-tongues l' due tothfeiryieldingor flexibility, whereby noise is substantially eliminated.Owing to `at? the elasticityof the tongues, they return ytoinorm'alposition asthe key'leverascends.

During ribbon vibrating operations, when the mechanism is set forprinting from'the lower-'field 1 ofthefribbon 26, upward move- 40 `mentsof the vibrator will bevlimited by contact ofthe pin 66 with the lefthand side offthehole (57,1thepin and theihole providing stop devices toprevent excess movement of theivibratorand so that the printing fieldwill always be within -the 'lower edge of theribbon. vPreferably stopdevices are also provided for `limitingithethrow of the vilbrator whenthe mechanism is set for print-' ing in the upper field t of tlie ribbon26.

Said stop devices are illustrated in Fig. 4

and comprise the downwardly extending or nose portion 75eA of the crankarm 75. Vhen the link 77 is set in the -position 'furthest from therockshaft TQ'as-shown in this'figure the outer end portion of the arm 94will ciently to carry the loweredge of ythe rib- 11,06 avec bon field atoo`far,1tlrus preventing any tip- -ping or printing of the `lowerportions of ynecessary functions of feeding, vibrating,

and reversing the ribbon as well as changing Vribbon fields ordispensing with the use of -the ribbon, all of'these functions beingaccomplished readily and effectively by means comparatively snnple inconstruction and 'which canbe economically manufactured.

Various iconstructional changes may be made without departing from myinvention, and'of1course some of its Afeatures may be made .use yofwithout others in association withJribbon mechanism of other forms orstyles.

lVhat-I claim as new and desire to secure by Letters Patent, is:-

l. 'Infa typewriting machine, the combifnation of ribbon spools, aribbon driving shaft-therefor, a ratchet vwheel operatively connect-edwith said'shaft, a pair of pawls constantly engaged with said ratchetwheel, printing key levers, type bar actuating devices connected withsaid lev-ers, a universal bar operative by certain of said devices, a'rock shaft connected with said universal bar, aqcrank -arm onsaidfrocak shaft, and a pawl carrying ymember pivot-ally connecteddirectly to said crank arm .and carrying said pair of pawls.'

2. In a typewriting machine, the combination ofiribbon spools, a/ribbondriving shaft therefor, aratchet wheel connected with said shaft, aypair of feeding pawls constantly engaged with said ratchet wheel.printing key levers, type bar actuating devices connected with saidlevers, a universal bar operative by certain of said devices, and a rockshaft-connected. with said universal bar, said pairv of pawls beingactuated by said rock l shaft.

3.111 atypewriting machine, the combi` Lnation'of a ribbon vibrator,.printing key levers, and connections between said printing keyileifersand said vibrator comprising a universal bar formed with a series of'vibrator comprising a universal bar formed with a series-offlexiblecontacts engageable by saidkey. levers and provided with a strip ofstrengthening material, the tongues alone transmitting movement fromsaid key levers to said-universal bar.

5, In a typewriting machine, the combiinname formed with individualflexible tongues, and

astrip of strengthening material. secured Within said universal bar.

6. In a typewriting machine, the combi@ nation of a ribbon vibrator, alink connected thereto, Va rock shaft operative on said link,

a crank arin on said rock shaft, a key operated universal bai', and alink connected with said crank armand with said universal bar, saiduniversal bar being provided with individual contact tongues and with astrip of strengthening material. In a typewriting machine, thecoinbinationol a ribbon vibrator, a link connected I thereto,a rockshaft operative on said link, a crank arm on said rock shaft, a key`operated universal bar, and a second link connected with saidicrank arm.and with said universal bar, said universal bar being providedwithindividual Contact tongues and with a strip of strengthening material,and

said second link ,being variablyv engageable ywith said crank arin.

8. In a typewriting machine, the combina tion of a ribbon vibrator, alink connected 3U thereto, a rock shaft operative on said link, a

crank arin on said rock shaft,aikey operated universal bar, anda secondlink connected with said crank arm and with said universal bar, saiduniversal bar being U-shaped and a5 slitted `to provide individualcontact tongues second link set invariable relationships with andcarrying a strip 'of strengthening inaterial below ysaid tongues, saidcrank arni being provided with a depressed portion and said secondlinkbeing slotted to engage i0 slidably at varying points with'saidcrank arm including the depressed portion thereof.

9. In a typewriting'fmachine, Vthe combi- `nation of a ribbon vibrator,a link connect-- ed thereto` a rock shaft operative on` said link, acrank arm on said rockshatt, ha key 'operated universalvbar, and asecond link connected with' saidunivcrsal bar and slotted to engage said`crankarin and co-'o'pciatc variably therewith. 1U. ln a 'typewiitiiiii'iachine. the coinbination ot a riblionvibra tor, al link connectyedthereto, a rock sliait oinerative on said link, `afvcrank arin on saidrock shattprovided with a depression, a key 'operated unii versal bar,and a slotted link connected with said universal bar and co-opeiatingrvariably with saidcrank alain-said slottodlink beine;

ineffective on said crankarm when oinpositc the depression therein.'

11. In atypewriting machine, thecoinbi- `nation of a ribbon vibrator, alink connected thereto, `a rockshaft.operativeon said link, a crank arinon said rock shaft, a keyy operswitch ,against movement.`

oversaid crank'arni, and ineans vfor main-- taining said slotted linkset in variable relationships with said crank arm.` f

12. In a typewriting machine, the combination oia 'ribbon-vibrator, alink connected thereto, a rock shalt operative on said link, a-crankarin on said rockshaft, a key operated universalibanasecon'd linkconnected' with said universal bar ,and slotted to cooperate withsaidcrank arm, and means tor maintaining said secondlink setl in variablerelationships with said crank arin, said last recited ineenscon'iprising a pivotc'd switch havingl a slot in' which said second linkengages.y l f 13. In a typewriting` inachine,.the combination oft'aiibbon vibrator, a link connected thereto, al rock slia'ttvoperative onsaid link, a crank arm on vsaid'ro'ck shaft, a key loperateduniversalbar, second link connected with said universal bar and slotted toco-operate with said crank arm, means iior maintaining said second linkset in variable relationships with said crank arm, said last recitedmeans comprising a, pivoted'sivitch having a slot in which said secondlink engages, and a springdevice connected to ysaid switch. n v

14..'In a typewritinginachine,ftlie :combination et a ribbon vibrator, alin'k'connectcd thereto,V a rock shaft `operative oli-said link, acrankarm on said rock shalt, a; second link slotted to `(zo-operate withsaid'crank arm, printing keys effective to actuate said second link,`and means for maintaining said` said `crank arm, said last recited`incans comprising a pivoted switchhaving,` a-slot in which said' secondlink engages, and a control handle pivoted on said` switch andnio-vableindependently thereof to 'lock Athe 15. In a typewritingmachine, the coinbination ot a ribbon. vibrator, a link connecterthereto, Ia! rock i shaft operative on said link, 1 a crank arm on 'saidrock shait, a .key operated universal bar, a second link connected withsaid universal bar andslotted to cooperate vvariably with said `crankarm. ,and Aincans t'or maintaining said second link set in variablerelationships wi tlisaid crank askin. said last recited means comprisinga pirated,

'spring-mounted switch having a slot in nation ot a ribbon vibrator, alinkconnected thereto, a rock shaittoperativezon said link, a crank armon said `rock shaft, a second' link key actuated'an'd engageablevariablywith said 4crank arm, switching member coiny'prising a U-Shptlbody portion having an `upright lixedpivot and an arinproJecting ics Cil

tomatically for *rendering said members effective, sai'd'shift-ing meansoperating independently ofthe pull of the ribbon.

18. In a ribbon reversing mechanism for typewriting machines, thecombination of ribbon spools,lashaft for driving said spools inalternation, and shaft shifting' means comprising key actuated membersconstant ly connected to said shaft but that'normally move ineffectivelyand devices controlledby the ribbon plies on said spools Ifor renderingsaid members effective, said shiftingmeans operating` independently ofthe pull ofthe ribbon. f

19. In a ribbon reversing` mechanism for typewritinp,` machines, `theconibination of ribbon carriers, a shaft for driving said carriers inalternation, and-shaft shifting means comprising,` pivot-ed membersadapted to be swung on their pivots at each-actuation of the printingkeys and constantly connected lto ksaid shaft, the `pivotal movements oflsaid members beingnormally ineffective and ribron-controlled devicesoperating automatically to render members effective,said shifting' meansoperating independently ofthe pull of the ribbon.

20. In a ribbon reversinglmechanism for typewriting machines, thecombination of ribbon spools,a shaft for driving said spools inalternation, and shaft-shifting means comprising pivoted memberskadapted to be swung on their pivots at each actuation of the printingkeys-and constantly connected to said shaft, the pivotal'movements ofsaid members being normally ineffective, and devices connected With saidribbon spools and controlledby the ribbon Wound thereon forautomatically rendering saidmembers eifecf tive to shift said shaft,said devices operatin@ indcpendentlyof the pull of the ribbon.

21. In a ribbon reversing mechanism for typewriting machines, thecombination of ribbon spools, a shiftable shaft operative to drivesaidspools in alternation, and shaft shifting means comprisingV key actuatedbell cranks that-'are constantly connected to said shaft but normallymove `ineffectively and reversing rods connected with said spools andcontrolled by the ribbon Wound thereon, said rods when releasedcooperating,l With said bell cranks to render them effective.

2Q. In a ribbon reversing,r mec-hanism for typeWrit-ing machines, thecombination of ribbon carriers, a shiftable shaft operative to drivesaid carriers in alternation, vand shaft shifting means comprising keyactuated bellcranks that normally move ineffectively, reversing rodsconnected with said carriers and controlled by the ribbon Wound thereon,and pivoted members connected with said shaft and on vwhich said bellcranks inturn are pivoted,'said rods when released cooperating with saidbell cranks` to render them effective to `move said pivoted members andshift said shaft.

In a t i,'fpeivriting machine, the combination of 4ribbon spools,shaftstherefor, a ribbon driving shaft shiftablc to connect with saidspoolL shafts, andmeans `for shifting; said driving-shaft automaticallyback and forth'to connect with said spool shafts, said means comprisingrods housed in said spool shafts and controlled Aby the ribbon wound onsaid spools, pivoted members connected with said driving shaft, and bellcranks pivoted'on said members and cooperative with saidvrods to move'said members with the-other arms of saidbellcranks, an-

other pair of bell cranks connected with said links, crank armsoperative on said other pair of bell cranks, anda key controlledrockshafton -ivhich'said crank arms are secured.

25. In' a front strike typewritingmachine, the combination of ribboncarriers, -vertical shaft-s onwhich said carriers are supported, beveledgears on said shafts, airibbon driving shaft, pinionsthereon engageablewith said gears, and means forvmoving said driving shaft automaticallyback and forth to'connect it Ialternatively `with said gears, saidmeanscomprising pivoted members, bell cranks pivoted on said members,abntments controlled by the ribbon cooperative With `arms of said bellcranks, and driving means connected with the other arms of said bellcranks.

26. In` afront strike typeivritingmachine, the combination of ribboncarriers,vertical shafts on which said carriers are supported, beveledgears on said shafts, aribbon driving shaft, pinions thereon engag-eablewith said gears, and means for moving said drivingshaft automaticallyback andfortlrrto connect it alternatively with said gears, said meanscomprising pivoted members, bell cranks pivoted on said members, keycon* trolled means normally effective to move said bell cranks idly, andobstructions controlled by the ribbon eliective to cause said bell`cranks to actuate said pivoted members.

27. ln a front strike typewriting machine, the combination of a platen;a vibratory ribbon holder comprising a slotted portion through which theribbon is threaded` and also a laterally extending arm terminating in anupward extension; a relatively stationary pivot lo which said extensionis pivoted; a link pivoted to said holder at the elbow formed by its armand extension; and key actuated means for moving said link in thedirection of its length.

28. ln a iront strike typewriting machine, the combination ot a platen;a vibratory ribbon holder comprising a slotted portion through which theribbon is threaded and an arm extending laterally and terminating in anupward extension; a relatively stationary pivot for said extension.; alink pivoted to said holder at the elbow formed by its arm andextension; an upwardly extending crank arm to which the opposite end ofsaid link is pivoted, a key actuated rock shaft to which saidcrank armis secured, and a draw spring connecting said crank arm with saidholder.

29. In a typewriting machine, the combination of a ribbon vibrator, arock shaft connected thereto, a crank arm on said rock shaft, a keyoperated link variably engageable with said crank arm, and a switch forsetting said link in varying normal. relationships with said crank arm,said crank armV being adapted to contact with said switch in one of itspositions to limit lthe throw of the vibrator.

30. In a typewriting machine, the combi'- nation of a ribbon vibrator, arock shaft connected thereto, a crank arm on said rock shaft, a keyoperated link variably engageable with said crank arm, a switch forsetting said link in varying normal relationships with said crank arm,said crank arm being adapted to contact with said switch in one of itspositions to limit the throw of the vibrator, and a stationary stopengageable by said vibrator also to limit its throw, the stationary stopbeing effective when the switch is ineffective as a stop.

3l. In a ytypewriting machine, the combination of a ribbon vibrator, arock shaft connected thereto, a crank arm on said rock shaft, a keyoperated link variably engageable with said crank arm, and a switch tor,

.stationary stop beinggreater than the `eX- tent of throw limited by theswitch.

32. Ina typewritingmachine, the com` bination otfa ribbon vibrator, akrock shaft connected thereto, a crank arm on said rock shaft, a keyoperated link variably engageable with said crank arm, and switch meansfor saidv link, said means being also effective as va stop to limit thevibratory movement of the ribbon.

33. In ai typewriting machine, the combination of a set of levers, and anoisereducing universal bar operative thereby said universal bar having,a flange slitted transversely to provide liexible spring tonguesengageable by said levers, said spring tongues alone transmittingmovement from said levers to said universal bar.

34. Ina typewriting machine, the combination of a set of pivoted leversa`universal bar underlying said levers and operative thereby, said barbeing made of thin metal and being U-shaped or channeldike in crosssection, one of the `flanges of vsaid bar being slitted transversely toprovide a. `series of Contact tongues engageable by said levers, thetongues being flexible or yielding, enabling the levers to ride over thetop of the universal bar and depress it, whereby the operation isrendered substantially noiseless.

35. In a typewriting machine, the combination of a set of levers, and anoise-reducu ing universal bar operative thereby, said universal barhaving a part. slitted transversely to provide flexible springv tongues,the tongues being inclined so that the levers will first strike the freeends of the tongues, said spring tongues alone transmitting movementfrom said levers to -said universal bar.

ySigned at Middletown, in the county` of Middlesex, and State ofConnecticut, this 26th day of September, A.` D. 1925.

GEGRGE G. GOING.

